324 THE CANADIAN ENTOMOLOGIST 



The ground colour of under side of hind wing is brown, tending to 

 dark brick red. From the centre of costa, extending transversely across 

 to submedian nervure, is a band or area heavily dashed with grayish or 

 whitish scales bending towards base at its central portion. The trans- 

 parent white spots of upper side are repeated. The two interspaces 

 towards inner margin are dusted with whitish scales, giving an appearance 

 of a continuation of the spots. The hind margin has a fringe of tawny 

 hairs, becoming quite prominent towards anal angle. Within the margin 

 for upper half of wing, the interspaces are heavily dusted with grayish or 

 whitish scales. The inner margin is reddish brown, the two interspaces 

 above being blackish. 



Female. — Identical with male, excepting the absence of the white 

 line and its dark ground on fore wings. 



Described from specimens taken April 5th, 1S99. It is very closely 

 allied to N. macareus, Herr Schaff. 



A CHANGE OF NAME. 



I have been promptly informed by Prof. Cockerell that the name 

 PhyUostoma, used by me in the November number, page 290, for a new 

 genus of Lucanid;e, is already in use for a genus of bats. I would 

 therefore propose in its stead Diphyllostoma. It has become a matter 

 of no small difficulty to select for a new genus a significant name, which 

 has never been used in any department of zoology, and for this reason 

 there is some excuse for the custom in vogue among certain authors 

 of using for generic titles purely meaningless, but euphonius, combinations 

 of letters, or various permutations of the letters in the names of older 

 allied genera. This method of coining generic names certainly possesses 

 the merit of simplicity, since they can be evolved in any required quantity 

 at a moment's notice and with practically no danger of preoccupation. 

 Personally, the custom seems deplorable for several reasons, but I am not 

 disposed to deny that it may be defended on other grounds than 

 expediency. H. C. Fall. 



